Oxygen desorption for improved color of polyesters

Details Oxygen desorption for improved color of polyesters Oxygen desorption for improved color of polyesters

1986-04-01

1987-04-28

Phynes, Lucille M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528194, C08G 6360

Patent

active

046615806

ABSTRACT:
A process for forming polyesters with reduced yellow coloration wherein the polyester-forming monomers are dried in a vacuum before being reacted. The reaction system itself contains a substantially deoxygenated atmosphere. The removal of oxygen from the reactants and the reaction system leads to the lessening of yellow coloration of the polyester product.

REFERENCES:
patent: 4482694 (1984-11-01), Freitag et al.

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